DatabaseLink`
DatabaseLink`

SQLColumnInformation

SQLColumnInformation[conn]

returns a list of information about the columns in an SQL connection.

SQLColumnInformation[conn,table]

returns a list pertaining to the columns in table.

SQLColumnInformation[conn,SQLTable[table]]

returns a list pertaining to the columns in table.

SQLColumnInformation[conn,{table,column}]

returns a list pertaining to the columns in table matching column.

SQLColumnInformation[conn,SQLColumn[{table,column}]]

returns a list pertaining to the columns in table matching column.

SQLColumnInformation[conn,SQLColumn[column]]

returns a list pertaining to the columns in any table matching column.

更多信息和选项

  • To use SQLColumnInformation, you first need to load DatabaseLink using Needs["DatabaseLink`"].
  • Table and column specifications may include SQL wildcards.
  • The following options can be given:
  • "Catalog"Nonedatabase catalog to use
    "Schema"Nonedatabase schema to use
    "ShowColumnHeadings"Falsewhether to return headings with the results

范例

基本范例  (1)

If you find that the examples in this section do not work as shown, you may need to install or restore the example database with the "DatabaseLink`DatabaseExamples`" package, as described in Using the Example Databases.

Open a connection:

Get information for all columns from tables whose names start with "SA":

Get information for all columns from a particular table:

Here is another way:

Get information for columns whose names begin with "V" from all tables:

Equivalently:

Here is another way:

If you find that the examples in this section do not work as shown, you may need to install or restore the example database with the "DatabaseLink`DatabaseExamples`" package, as described in Using the Example Databases.